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Hazardous Weather Conditions

Current conditions at

Decatur Airport (KDEC)

Lat: 39.83°NLon: 88.87°WElev: 670ft.

Overcast

70°F

21°C

Humidity 84%
Wind Speed E 13 mph
Barometer 30.02 in (1016.0 mb)
Dewpoint 65°F (18°C)
Visibility 10.00 mi
Last update 26 Jun 9:54 am CDT
Extended Forecast for

Niantic IL

Flood Watch June 26, 10:01am until June 27, 01:00pm
Click here for hazard details and duration
Flood Watch
  •  
    Flood Watch June 26, 10:01am until June 27, 01:00pm

    NOW until 1:00pm Sat

    Flood Watch

  • Today

    High: 72 °F

    Showers

  • Tonight

    Tonight: A chance of showers and thunderstorms before 10pm, then a slight chance of showers between 10pm and 1am. Mostly cloudy, with a low around 63. North northeast wind 6 to 13 mph, with gusts as high as 17 mph. Chance of precipitation is 50%.

    Low: 63 °F

    Chance
    Showers then
    Slight Chance
    Showers

  • Saturday

    Saturday: Partly sunny, with a high near 80. North northeast wind around 6 mph becoming east in the afternoon.

    High: 80 °F

    Partly Sunny

  • Saturday Night

    Saturday Night: Showers likely and possibly a thunderstorm after 1am. Mostly cloudy, with a low around 67. Southeast wind 5 to 8 mph. Chance of precipitation is 60%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.

    Low: 67 °F

    Mostly Cloudy
    then Showers
    Likely

  • Sunday

    Sunday: Mostly sunny, with a high near 90. South wind 10 to 14 mph, with gusts as high as 20 mph.

    High: 90 °F

    Mostly Sunny

  • Sunday Night

    Sunday Night: Mostly clear, with a low around 73. South wind 8 to 13 mph, with gusts as high as 18 mph.

    Low: 73 °F

    Mostly Clear

  • Monday

    Monday: Sunny, with a high near 93. South wind 8 to 14 mph, with gusts as high as 21 mph.

    High: 93 °F

    Sunny

  • Monday Night

    Monday Night: Mostly clear, with a low around 75.

    Low: 75 °F

    Mostly Clear

Detailed Forecast

Today
Showers and possibly a thunderstorm. High near 72. East wind 11 to 13 mph, with gusts as high as 20 mph. Chance of precipitation is 90%. New rainfall amounts between three quarters and one inch possible.
Tonight
A chance of showers and thunderstorms before 10pm, then a slight chance of showers between 10pm and 1am. Mostly cloudy, with a low around 63. North northeast wind 6 to 13 mph, with gusts as high as 17 mph. Chance of precipitation is 50%.
Saturday
Partly sunny, with a high near 80. North northeast wind around 6 mph becoming east in the afternoon.
Saturday Night
Showers likely and possibly a thunderstorm after 1am. Mostly cloudy, with a low around 67. Southeast wind 5 to 8 mph. Chance of precipitation is 60%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
Sunday
Mostly sunny, with a high near 90. South wind 10 to 14 mph, with gusts as high as 20 mph.
Sunday Night
Mostly clear, with a low around 73. South wind 8 to 13 mph, with gusts as high as 18 mph.
Monday
Sunny, with a high near 93. South wind 8 to 14 mph, with gusts as high as 21 mph.
Monday Night
Mostly clear, with a low around 75.
Tuesday
Sunny, with a high near 94.
Tuesday Night
Clear, with a low around 74.
Wednesday
Sunny, with a high near 94.
Wednesday Night
Mostly clear, with a low around 73.
Thursday
Sunny, with a high near 94.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Niantic IL
 39.85°N 89.17°W (Elev. 600 ft)
Last Update:
9:36 am CDT Jun 26, 2026
Forecast Valid:
10am CDT Jun 26, 2026-6pm CDT Jul 2, 2026
 
Forecast Discussion
 
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Additional Resources

Radar & Satellite Image

Link to Local Radar Data Link to Satellite Data

Hourly Weather Forecast

National Digital Forecast Database

National Digital Forecast Database Maximum Temperature Forecast

High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation